A Tank is a warrior who uses a Shield and abilities like Shield Wall, Shield Defense, Shield Cover, Threaten and Taunt to force enemies attacks upon himself. He's the damage-absorbing sponge of the team, allowing free movement and liberty to decide what will the other teammates do, without worrying about getting hit most of the times.
A Tank coupled with a good healer backing him up will make most fights a breeze, since you'll have two or three teammates doing heavy attacks on the enemies, especially if your other characters are Ranged or DPS like Zethran or Leliana with a dual sword combo (should you go for that skill tree).
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
